CN108770107A - A kind of microwave device for columnar object heating - Google Patents

A kind of microwave device for columnar object heating Download PDF

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Publication number
CN108770107A
CN108770107A CN201810873254.2A CN201810873254A CN108770107A CN 108770107 A CN108770107 A CN 108770107A CN 201810873254 A CN201810873254 A CN 201810873254A CN 108770107 A CN108770107 A CN 108770107A
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China
Prior art keywords
printed antenna
heated material
pedestal
microwave
column heated
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CN201810873254.2A
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Chinese (zh)
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CN108770107B (en
Inventor
林先其
贾小翠
刘东屹
于家伟
刘士林
李晨楠
王豹
王旭
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University of Electronic Science and Technology of China
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University of Electronic Science and Technology of China
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Priority to CN201810873254.2A priority Critical patent/CN108770107B/en
Publication of CN108770107A publication Critical patent/CN108770107A/en
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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves

Abstract

The invention discloses a kind of microwave devices for columnar object heating.Including pin type printed antenna, coaxial feed, pedestal, pedestal firmware, shielding cavity.Pin type printed antenna can be fixed on the base by pedestal and fixing piece, pin type printed antenna is heated by being inserted into cylindrical objects center to be heated simultaneously, reduce the leakage of electromagnetic wave by metallic enclosure, and the through-hole on shielding cavity be used for being heated after temperature detection and smell release.The present invention is the application of microwave heating in the industry, and advantage makes with the good effect such as high conversion efficiency, homogeneous heating, portable, safe.

Description

A kind of microwave device for columnar object heating
Technical field
The invention belongs to Pulse width fields, are related to a kind of microwave device for columnar object heating.
Background technology
Microwave heating is a kind of application relatively conventional in Pulse width field, due to it with the high efficiency of heating surface and The features such as high uniformity, obtains more application in food heating, medicinal material drying, tealeaves stir-frying, road surface deicing etc..Only In such applications, microwave energy is more to be radiated open sky by large-size antennaes such as waveguide trumpet, metal dipoles Between either in larger closed metal container.When required antenna size and confined space are contracted to a microwave operational wave When within length, serious mismatch, which can occur, for antenna causes energy can not be in Net long wave radiation to closed chamber.How for special to be added Hot object develops a kind of microwave heating equipment of compact type, it is ensured that microwave energy can be arrived by corresponding aerial radiation In the relatively narrow metal enclosed space of size, with a big difficulty studied as microwave heating.
Invention content
The purpose of the present invention is to provide a kind of microwave devices for columnar object heating, are realizing that microwave energy is higher While utilization, the uniformity of its heating effect is realized;And background, customization it can design entire microwave according to different needs and add The size of thermal realizes the miniaturization of heating device and cost effective.
To achieve the above object, the technical solution adopted by the present invention is that:A kind of microwave device for columnar object heating, Including pin type printed antenna, coaxial feed, pedestal, base fixture, shielding cavity;The pin type printed antenna is fixed on pedestal On, and microwave feed is carried out by coaxial feed, and it is inserted into the center of columnar object;The base fixture prints pin type Antenna, pedestal are fixed in base fixture;The shielding cavity is covered on by pin type printed antenna, pedestal, fixing piece and column In the module of shape object composition.
Further, the pin type printed antenna is made of N (N >=3) the GeUXing branches being printed on on substrate, often The width of the line of Liang Ge branches and mutual spacing are determined by the type and diameter of columnar object;The U-shaped branch of each two The length of line is determined by the length and type of columnar object to be heated;Be splitter formula at the top of pin type printed antenna, facilitate by Pin type printed antenna is inserted into the center of columnar object;Be provided with through-hole on the pedestal of pin type printed antenna, for screw by its It is fixed on the base.
Further, the pedestal includes movable block, threaded hole and screw, and movable block can be inserted by screw Enter threaded hole and fixes pin type printed antenna on pedestal.
Further, venthole, two grooves and screw are provided on the shielding cavity, screw will by groove Shielding cavity is fixed together with remaining part.
Further, coaxial feed can be inserted into threaded hole by screw and is fixed on the base, and be printed with pin type The feed section of antenna is in electrical contact.
Compared with prior art, the present invention having the following advantages and beneficial effect:
(1) it may be implemented to be evenly heated cylindricality heated material.
(2) miniaturization and the portability of entire heating device may be implemented.
(3) safety of heating device can be ensured.
The purpose of the present invention, feature and advantage will make explanation further below with reference to attached drawing in conjunction with the embodiments.
Description of the drawings
Fig. 1 is the overall schematic of the present invention
Fig. 2 is the planar printed antenna structural schematic diagram designed by the present invention.
Fig. 3 is reflectance factor S11 curve of the pin type printed antenna in 2.40GHz-2.50GHz.
Specific implementation mode
As shown in the overall structure expanded schematic diagram of Fig. 1, a kind of microwave device for columnar object heating includes pin type Printed antenna 1, coaxial feed 2, pedestal 3, base fixture 4, shielding cavity 5.It is characterized in that:Pin type printed antenna 1 is fixed on It on pedestal 3, and is fed by coaxial feed 2, pin type printed antenna 1, pedestal 3 are fixed on pedestal and fixed by base fixture 4 In part 4, cylindrical objects 6 to be heated are fixed along the splitter end of pin type printed antenna by inserting down, shielding cavity 5 is covered on by pin type In the module that printed antenna 1, pedestal 3, fixing piece 4 and cylindrical objects 6 form.
Further, pin type printed antenna 1 is made of N (N >=3) GeUXing branches, the width of the line of each two branch and Mutual spacing is determined by the type of substance to be heated;The length of the U-shaped branch line of each two is by cylindrical objects 6 to be heated Length determines;It is provided with threaded hole 11 on the pedestal of pin type printed antenna 1, is used for the fixation of screw 32.
Further, the pedestal 3 includes movable block 33, threaded hole 31 and screw 32, and movable block 33 can lead to It crosses the insertion threaded hole 31 of screw 34 to fix slotting pin type printed antenna 1 on the base 3, facilitates coaxial feed 2 to pin type Printed antenna carries out stablizing feed.
Further, 54, two grooves 53 of venthole and screw 52, screw 52 are provided on the shielding cavity 5 Shielding cavity 5 is fixed together with remaining part by groove 53, on the one hand, by the pin type printed antenna 1 and pillars of heating The cover of body 6 gets up, and prevents the leakage of electromagnetic wave, and on the other hand, trepanning on shielding cavity realizes the real time monitoring to heating temperature, also It can be used as ventilation hole, be conducive to smell etc. and shed.
Further, the coaxial feed 2 can be inserted into threaded hole 31 by screw 32 and be fixed on the base 3, And contacted with the feed section of pin type printed antenna 1, for feeding, and the size of feed-in microwave power, it can be according to actually required Heating effect set.
In order to further illustrate the exploitativeness of said program, a specific design example is given below.One kind is used for The microwave device of columnar object heating, the pin type printed antenna of design are operated in 2.4GHz~2.5GHz.The dielectric substrate used Thickness be 0.508mm, dielectric constant be 3.66 Rogers 5880.Entirely the size of substrate is:14mm*6mm* 0.508mm, the chamfering length wherein at splitter are 3mm;The number of printed antenna on substrate, U-shaped metal band is 4, each U The line width of type metal band is 0.4mm, and the gap inside each U-shaped metal band is respectively 0.4mm, two neighboring metal strip Spacing between band is 0.4mm, 0.3mm, 0.4mm;A diameter of 8mm of metallic enclosure is highly 27mm, divulges information on side wall A diameter of 1.4mm in hole, a diameter of 7mm of columnar object, relative dielectric constant 1.9, loss angle tangent 0.07.Entire S11 in working frequency range 2.4GHz~2.45GHz is respectively less than -10dB.Those of ordinary skill in the art will understand that here The embodiment described is to help reader and understands the principle of the present invention, it should be understood that protection scope of the present invention is not limited to In such specific embodiments and embodiments.Those skilled in the art can be according to the technical disclosures disclosed by the invention Various various other specific variations and combinations for not departing from the present invention are made, these variations and combinations are still in the protection of the present invention In range.

Claims (3)

1. a kind of microwave device for columnar object heating, including planar printed antenna (1), coaxial feed (2), metab (3), base fixture (4), metallic enclosure (5), column heated material (6);It is characterized in that:The planographic day Line (1) is fixed on metab (3), and carries out microwave feed by coaxial feed (2), and from bottom to top is inserted into column and is waited for It is internal to heat object (6);;The metab (3) is fixed in base fixture (4), it is ensured that metab (3) and plane When column heated material (6) are inserted into double swerve does not occur for printed antenna (1);The metallic enclosure (5) covers flat Face printed antenna (1) and column heated material (6), and it is close to form with pedestal (3) and base fixture (4) electromagnetism together Closed chamber, it is ensured that the microwave radiated by planar printed antenna (1) will not be leaked to outside electromagnetism closed chamber.
2. a kind of microwave device for columnar object heating according to claim 1, it is characterised in that:Planographic day Line (1) is by a U-shaped branch lines (13) of the N (N >=2) being printed on high temperature resistant substrate (12) and class coplanar wave guide feedback line segment (14) form, the width of each U-shaped branch line (13) and mutual spacing by column heated material equivalent electromagnetism Parameter and sectional area determine;The length of each U-shaped branch line (13) is slightly less than the length of column heated material (6);Plane Splitter formula is processed at the top of printed antenna (1), it is convenient from bottom to top to be rapidly inserted into column heated material (6) inside;Institute The class coplanar wave guide feedback line segment (14) stated includes that middle part is connected directly with U-shaped branch line one of in N number of U-shaped branch line Straight micro-strip line segment (15) and positioned at straight micro-strip line segment (15) both sides ground plane (16);Adjust straight micro-strip line segment (15) and The gap spacing of ground plane (16) changes the characteristic impedance of class coplanar wave guide feedback line segment (14), and then realizes that microwave is effectively presented Enter onto planar printed antenna (1).
3. the microwave device according to claim 1 for columnar object heating, it is characterised in that:The shielding cavity (5) side wall is provided with M (M >=2) detection through-hole (51) for the temperature of column heated material, the real-time prison of humidity parameter Control;The exhaust that netted venthole facilitates column heated material is provided with above shielding cavity (5);Shielding cavity is opened below (5) There are two grooves (53);Screw (52) by being inserted into groove (53) fixes shielding cavity (5) and pedestal (3) and pedestal Part (4) is tightly secured together.
CN201810873254.2A 2018-08-02 2018-08-02 Microwave device for heating columnar object Active CN108770107B (en)

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Application Number Priority Date Filing Date Title
CN201810873254.2A CN108770107B (en) 2018-08-02 2018-08-02 Microwave device for heating columnar object

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CN108770107A true CN108770107A (en) 2018-11-06
CN108770107B CN108770107B (en) 2024-04-19

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109496005A (en) * 2018-11-23 2019-03-19 电子科技大学 A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading
CN110662322A (en) * 2019-09-02 2020-01-07 成都亚彦科技有限公司 Microwave output control method and device, storage medium and terminal equipment
CN112137167A (en) * 2019-06-28 2020-12-29 北京航天雷特机电工程有限公司 Microwave antenna and electronic cigarette
CN113825271A (en) * 2021-08-26 2021-12-21 电子科技大学长三角研究院(湖州) Traditional chinese medicine heating box based on microwave heating

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JP2010097884A (en) * 2008-10-18 2010-04-30 National Institute Of Advanced Industrial Science & Technology Microwave heating of conductive thin film
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CN105932418A (en) * 2016-06-12 2016-09-07 天津大学 Ultra-wideband coplanar waveguide antenna used for target detection
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CN107635301A (en) * 2017-10-23 2018-01-26 大庆东油睿佳石油科技有限公司 A kind of coiled tubing type micro-wave heating device for exploitation of gas hydrate
CN107732439A (en) * 2017-09-08 2018-02-23 哈尔滨工业大学 The high-gain printed antenna of wideband omnidirectional with choke
CN208609232U (en) * 2018-08-02 2019-03-15 电子科技大学 A kind of microwave device for columnar object heating

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322984A (en) * 1992-04-03 1994-06-21 James River Corporation Of Virginia Antenna for microwave enhanced cooking
CN1124837A (en) * 1994-07-12 1996-06-19 三星电子株式会社 Electronic oven
CN1496194A (en) * 1994-10-20 2004-05-12 松下电器产业株式会社 High frequency electric wave heater
US20040045957A1 (en) * 2002-04-08 2004-03-11 Wayne Openlander System for microwave enhanced chemistry
CN1485878A (en) * 2002-09-26 2004-03-31 ���ǵ�����ʽ���� Magnetron for microwave ovens
RU2008137844A (en) * 2008-09-22 2010-03-27 Валерий Степанович Жилков (UA) MICROWAVE
JP2010097884A (en) * 2008-10-18 2010-04-30 National Institute Of Advanced Industrial Science & Technology Microwave heating of conductive thin film
US20130256302A1 (en) * 2012-03-31 2013-10-03 Microcube, Llc Returned power for microwave applications
EP3177109A1 (en) * 2015-12-04 2017-06-07 Electrolux Appliances Aktiebolag Microwave oven
WO2017164290A1 (en) * 2016-03-25 2017-09-28 パナソニックIpマネジメント株式会社 Microwave heating device
CN105932418A (en) * 2016-06-12 2016-09-07 天津大学 Ultra-wideband coplanar waveguide antenna used for target detection
CN107087323A (en) * 2017-05-22 2017-08-22 吴凡 Microwave heats heat conductive rod
CN107732439A (en) * 2017-09-08 2018-02-23 哈尔滨工业大学 The high-gain printed antenna of wideband omnidirectional with choke
CN107635301A (en) * 2017-10-23 2018-01-26 大庆东油睿佳石油科技有限公司 A kind of coiled tubing type micro-wave heating device for exploitation of gas hydrate
CN208609232U (en) * 2018-08-02 2019-03-15 电子科技大学 A kind of microwave device for columnar object heating

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109496005A (en) * 2018-11-23 2019-03-19 电子科技大学 A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading
CN109496005B (en) * 2018-11-23 2022-07-08 电子科技大学 Microwave heating device based on loading of multifrequency multimode antenna
CN112137167A (en) * 2019-06-28 2020-12-29 北京航天雷特机电工程有限公司 Microwave antenna and electronic cigarette
CN110662322A (en) * 2019-09-02 2020-01-07 成都亚彦科技有限公司 Microwave output control method and device, storage medium and terminal equipment
CN110662322B (en) * 2019-09-02 2022-11-15 成都亚彦科技有限公司 Microwave output control method and device, storage medium and terminal equipment
CN113825271A (en) * 2021-08-26 2021-12-21 电子科技大学长三角研究院(湖州) Traditional chinese medicine heating box based on microwave heating

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